Proceedings of the American Mathematical Society

Author(s): Claudio Nebbia
Journal: Proc. Amer. Math. Soc. 128 (2000), 347-351.
MSC (1991): Primary 20E08; Secondary 22D05, 43A60
Posted: June 21, 1999
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Abstract: In this paper we prove that every closed noncompact group

of isometries of a homogeneous tree which acts transitively on the tree boundary contains a normal closed cocompact subgroup

which is minimally almost periodic. Moreover we prove that

is a topologically simple group.

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